I need to create array like that:
Array(
'firstkey' => Array(
'secondkey' => Array(
'nkey' => ...
)
)
)
From this:
firstkey.secondkey.nkey.(...)
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1This sounds like you're going to have to write something recursive...greg0ire– greg0ire2010-09-25 10:43:56 +00:00Commented Sep 25, 2010 at 10:43
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where do you get such a string?Your Common Sense– Your Common Sense2010-09-25 10:51:08 +00:00Commented Sep 25, 2010 at 10:51
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Is the deepest entry an empty array, or a string?Powertieke– Powertieke2010-09-25 14:52:51 +00:00Commented Sep 25, 2010 at 14:52
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3 Answers
$yourString = 'firstkey.secondkey.nkey';
// split the string into pieces
$pieces = explode('.', $yourString);
$result = array();
// $current is a reference to the array in which new elements should be added
$current = &$result;
foreach($pieces as $key){
// add an empty array to the current array
$current[ $key ] = array();
// descend into the new array
$current = &$current[ $key ];
}
//$result contains the array you want
Comments
My take on this:
<?php
$theString = "var1.var2.var3.var4";
$theArray = explode(".", $theString); // explode the string into an array, split by "."
$result = array();
$current = &$result; // $current is a reference to the array we want to put a new key into, shifting further up the tree every time we add an array.
while ($key = array_shift($theArray)){ // array_shift() removes the first element of the array, and assigns it to $key. The loop will stop as soon as there are no more items in $theArray.
$current[$key] = array(); // add the new key => value pair
$current = &$current[$key]; // set the reference point to the newly created array.
}
var_dump($result);
?>
With an array_push() in the while loop.
What do you want the value of the deepest key to be?
Comments
Try something like:
function dotToArray() {
$result = array();
$keys = explode(".", $str);
while (count($keys) > 0) {
$current = array_pop($keys);
$result = array($current=>$result);
}
return $result;
}
